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Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study

Objective  The purpose of this study was to evaluate and compare the axial inclination of the mandibular first molars and their respective bone morphology among individuals with different facial patterns. Materials and Methods  The sample comprised the cone beam computed tomographies (CBCTs) of 58 s...

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Autores principales: Ferreira, Marcos Cezar, Freitas, Karina Maria Salvatore de, Herrera-Sanches, Francyle Simões, Santos, Patrícia Bittencourt dos, Garib, Daniela, Janson, Guilherme, Freitas, Marcos Roberto de
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Thieme Medical and Scientific Publishers Private Ltd. 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7274827/
https://www.ncbi.nlm.nih.gov/pubmed/32438429
http://dx.doi.org/10.1055/s-0040-1709932
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author Ferreira, Marcos Cezar
Freitas, Karina Maria Salvatore de
Herrera-Sanches, Francyle Simões
Santos, Patrícia Bittencourt dos
Garib, Daniela
Janson, Guilherme
Freitas, Marcos Roberto de
author_facet Ferreira, Marcos Cezar
Freitas, Karina Maria Salvatore de
Herrera-Sanches, Francyle Simões
Santos, Patrícia Bittencourt dos
Garib, Daniela
Janson, Guilherme
Freitas, Marcos Roberto de
author_sort Ferreira, Marcos Cezar
collection PubMed
description Objective  The purpose of this study was to evaluate and compare the axial inclination of the mandibular first molars and their respective bone morphology among individuals with different facial patterns. Materials and Methods  The sample comprised the cone beam computed tomographies (CBCTs) of 58 subjects divided into three groups according to the facial patterns: 18 brachyfacial (Group 1), with a mean age of 21.58 years; 23 mesofacial (Group 2), with a mean age of 19.14 years; and 17 dolichofacial subjects (Group 3), with a mean age of 19.09 years. Eight variables were evaluated on CBCT scans of each subject: buccal and lingual mandibular height, cervical and middle mandibular width, inclination of mandibular body, inclination of the mandibular molar buccal surface, molar width, molar angulation and tooth/bone angle. Intergroup comparisons were performed with one-way analysis of variance followed by Tukey tests. Results  Buccal mandibular height presented statistically significant difference in the three facial patterns. Lingual mandibular height and mandibular inclination showed to be statistically and significantly smaller in brachyfacial subjects than in the other two groups. Mandibular width presented a statistically significant difference between brachyfacial and mesofacial groups. Negative correlations could be observed between the facial pattern and the buccal and lingual mandibular heights and inclination of the mandibular body. Conclusion  Buccal mandibular height was significantly and progressively larger in brachyfacial, mesofacial, and dolichofacial subjects. Lingual mandibular height was significantly smaller in brachyfacial than in mesofacial and dolichofacial subjects. Mandibular width was significantly thicker in brachyfacial than in mesofacial subjects. Brachyfacial subjects had smaller mandibular inclination than mesofacial and dolichofacial subjects.
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spelling pubmed-72748272020-06-10 Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study Ferreira, Marcos Cezar Freitas, Karina Maria Salvatore de Herrera-Sanches, Francyle Simões Santos, Patrícia Bittencourt dos Garib, Daniela Janson, Guilherme Freitas, Marcos Roberto de Eur J Dent Objective  The purpose of this study was to evaluate and compare the axial inclination of the mandibular first molars and their respective bone morphology among individuals with different facial patterns. Materials and Methods  The sample comprised the cone beam computed tomographies (CBCTs) of 58 subjects divided into three groups according to the facial patterns: 18 brachyfacial (Group 1), with a mean age of 21.58 years; 23 mesofacial (Group 2), with a mean age of 19.14 years; and 17 dolichofacial subjects (Group 3), with a mean age of 19.09 years. Eight variables were evaluated on CBCT scans of each subject: buccal and lingual mandibular height, cervical and middle mandibular width, inclination of mandibular body, inclination of the mandibular molar buccal surface, molar width, molar angulation and tooth/bone angle. Intergroup comparisons were performed with one-way analysis of variance followed by Tukey tests. Results  Buccal mandibular height presented statistically significant difference in the three facial patterns. Lingual mandibular height and mandibular inclination showed to be statistically and significantly smaller in brachyfacial subjects than in the other two groups. Mandibular width presented a statistically significant difference between brachyfacial and mesofacial groups. Negative correlations could be observed between the facial pattern and the buccal and lingual mandibular heights and inclination of the mandibular body. Conclusion  Buccal mandibular height was significantly and progressively larger in brachyfacial, mesofacial, and dolichofacial subjects. Lingual mandibular height was significantly smaller in brachyfacial than in mesofacial and dolichofacial subjects. Mandibular width was significantly thicker in brachyfacial than in mesofacial subjects. Brachyfacial subjects had smaller mandibular inclination than mesofacial and dolichofacial subjects. Thieme Medical and Scientific Publishers Private Ltd. 2020-05 2020-05-21 /pmc/articles/PMC7274827/ /pubmed/32438429 http://dx.doi.org/10.1055/s-0040-1709932 Text en https://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.
spellingShingle Ferreira, Marcos Cezar
Freitas, Karina Maria Salvatore de
Herrera-Sanches, Francyle Simões
Santos, Patrícia Bittencourt dos
Garib, Daniela
Janson, Guilherme
Freitas, Marcos Roberto de
Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study
title Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study
title_full Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study
title_fullStr Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study
title_full_unstemmed Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study
title_short Evaluation of Mandibular First Molars’ Axial Inclination and Alveolar Morphology in Different Facial Patterns: A CBCT Study
title_sort evaluation of mandibular first molars’ axial inclination and alveolar morphology in different facial patterns: a cbct study
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7274827/
https://www.ncbi.nlm.nih.gov/pubmed/32438429
http://dx.doi.org/10.1055/s-0040-1709932
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